Attapulgite nanorods assisted surface engineering for separator to achieve high-performance lithium–sulfur batteries

作     者：Wenhao Sun Xiaogang Sun Naseem Akhtar Chengming Li Weikun Wang Anbang Wang Kai Wang Yaqin Huang Wenhao Sun;Xiaogang Sun;Naseem Akhtar;Chengming Li;Weikun Wang;Anbang Wang;Kai Wang;Yaqin Huang

作者机构：Beijing Key Laboratory of Electrochemical Process and Technology for MaterialsKey Laboratory of Biomedical Materials of Natural MacromoleculesMinistry of EducationBeijing University of Chemical TechnologyBeijing 100029China Research Institute of Chemical DefenseBeijing 100191China Institute of Electrical EngineeringChinese Academy of SciencesBeijing 100190China 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2020年第29卷第9期

页      面：364-374,I0011页

核心收录：

学科分类：0808[工学-电气工程] 07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Nos.51861165101,51822706,51777200) Beijing Natural Science Foundation(No.JQ19012) DNL Cooperation Fund,CAS(DNL201912) 

主　　题：Surface engineering Multi-metal oxide Separator Shuttle effect Synergistic effect 

摘      要：Lithium-sulfur(Li-S)batteries have been recognized as one of the most promising candidates for nextgeneration portable electronic devices,owing to their extremely high energy density and low ***,the dissolution of lithium polysulfides(LiPSs)and consequentshuttle effectseriously hinder the practical deployment of Li-S ***,multi-metal oxide nanorods named attapulgite are proposed as multifunctional ionic sieve to immobilize LiPSs and further promote the regulation of ***,consisting of Al,Mg,Fe,Si and O ions,possesses more polar sites to immobilize LiPSs in comparison with single metal *** addition,the catalytic nature(Fe ions)of attapulgite avails the LiPSs conversion reaction,which is further confirmed by the linear sweep voltammetry and electrochemical impedance *** from the synergistic effect of multi-metal oxide and conductive carbon,the Li-S battery with the modified separator delivers remarkable discharge capacities of 1059.4 mAh g-1 and 792.5 mAh g-1 for the first and 200th cycle at 0.5 C,*** work presents an effective way to improve the electrochemical performance of Li-S batteries by employing attapulgite nanorods assisted separator surface engineering.